大身色棕色的繩子是用黑色

大身色棕色的繩子是用黑色

結果 (英文) 1:

The brown rope is black

結果 (英文) 2:

They are added because people would probably refuse to eat certain products without them. Margarine and ice cream, for example, would have unacceptable tastes, whereas certain jellies, some other sweets, and meat replacement products would have little or no taste.

Natural flavours are those found in nature. Those from vegetable sources include vanilla, strawberry, lemon and nuts. An example of an animal source is beef flavouring, added for example to chips. Essential oils and fruit juices can also be used to flavour foods. They are sourced in nature and obtained through physical processes such as distillation and fermentation. Some animal flavours, such as bacon and beef flavour in crisps, are vegetarian because they are artificial rather than made from animal sources.

There are also nature-identical flavourings. An example is vanillin, which is often produced cheaply from lignin, a polymer, rather than from vanilla pods. These flavourings are chemically identical to natural flavourings, but have been produced chemically rather than naturally, e.g. by a process of chemical extraction. The human body does not notice the difference as their molecules are identical to natural ones.
Artificial flavourings consist of chemically synthesized compounds which have no source whatsoever in nature. Although the word natural has positive connotations, some natural flavours may have contaminated sources, which are harmful. Artificial flavours undergo strict testing because they are subject to laws (e.g. The European Flavouring Regulation (1334/2008) and may therefore be purer and safer. Using natural flavourings is also more expensive and may be considered a waste at a time when we are trying to preserve nature.